id	keyword
humanimalia-9630	years
humanimalia-9630	horses
humanimalia-9630	animals
humanimalia-9630	mustangs
humanimalia-9630	domestication
humanimalia-9630	study
humanimalia-9630	behavior
humanimalia-9630	time
humanimalia-9630	wild
humanimalia-9630	length
humanimalia-9630	grooming